Governor-controlled throttle-valve



W. TURNBULL. GOVERNOR CONTROLLED THROTTLE VALVE.

APPLICATION FILED SEPT- I 1917.

Patented June 22, 1920;

WITNESSES:

UNITED STATES; PATENT OFFICE.

WILLIAM TURNBULL, OF PEORIA, ILLINOIS, ASSIGIIOR TO THE HOLT MANUFACTUR-ING- COMI?ANY, OF STOCKTON, CALIFORNIA, A CORPORATION OF CALIFORNIA. 1

GOVERNOR-CONTROLLED THROTTLE-VALVE.

. In the ordinary governor controlled but-- terfly throttlevalve theaction of the suction from the engine creates a tendency on the part ofthe valve when closed to remain closed until the suction resistance isovercome and then to open suddenly. This sume is exemplified in thefollowing dee scription and illustrated in. the accompanying drawings,in which- Figure 1 shows a side elevation of an engine fitted with agovernor controlled throttle valve embodying my invention.

Fig. 2 shows a sectional-view of the throttle valve. J

The throttle valve. here shown is preferably in the form' of a weightedpuppetvalveA, mounted on a stem upper end in a spider C and having abeveled seat D from which the valve 0 ens in a direction toward theengine. Pre erably, the valve is arranged in the intake; of the manifoldE. The throttle valve is connected with the governor F in such a waythat the.

governor springs,'or the normal action of the governor over-balances theweight of v the valve and holds the latter open.

In operation, as the speed of the engine increases and the weights G onthe governor fly outwardly, the valve is correspondingly closed. Theactuating connections as shown herein embody a shaft H having one arm Ijointed to the lower end of the valve stem 7 Band anotherarm J connectedby a link K to governo am L; pivotel at M and guided at its-Specification of Letters Patent. Pat t J n 22, 1920 Application filedSeptember 1, 1917. Serial No. 189,403. I

normally held inwardly at its upper end by means of a spring N. When thespeed of the engine increases, the governor balls Gr, acting throughsuitable leven arms, draw the lower end of lever L inwardly against theaction of spring N.

Various changes in construction and arrangement of the several partsherein shown and described may be made without departing from the spiritof my invention as disclosed in the appended claims.

Having thus described my invention what I claim and desire to secure byLetters Patent r I r 1. In an internal combustion: engine, a throttlevalve tending normally to seat by reason of gravity and acted upon bysuction from the engine to tendflto open, and a. governor forcontrolling said valve arranged so that the normal load on the gov-.

ernor over-balances the weight of the valve and holds the latter open,further opening being assisted by suction, and closing of the same beingassisted by gravity.

2. A governor controlled throttle valve for internal combustion engines,comprising a weighted puppet-valve movable vertically,

and a beveled seat below for'said valve formedin the intake manifold,said valve by reason of its weight tending normally to close, and beingactuated by suction from the engine in a direction to produce a tendencyto open, and a governor operatively connected to said valve in suchmanner that the normal load on the governor over-balances the weight ofthe valve and holds said valve open.

' 3. A governor controlled throttle valve for internal combustionengines, comprisduce a tendency to open, and a governor operativelyconnected to said-valve in such manner'that the normal load on thegovernor over-balances the weight of the .valve and "holds said valveopen, said operative connections including a shaft having an arm linkedto the lower end of the stem" of the valve, a second arm on the shaft, a

link connected to said second arm, and a governor armto which said linkis conwhereby on an increase of engine speed witnesses.

beyond a predetermined point the governor operates correspondingly toclose'the valve. In testimony whereof I have hereunto set my hand in thepresence of two'subscribing WILLIAM TUBNBULL.

Witnewes:

H. N. BOSWELL, I EARL F. Normans,

